Cultivator and like machine.



S. N. HENGH. CULTIVATOR AND LIKE MACHINE.

APPLIOATION FILED 1030.12, 1908.

Patented Apr. 6, 1909. 2 SHEETS-SHEET 1.

fizveizivif APPLICATION FILED DEC. 12, 1908.

Patented Apr. 6, 1909.

2 SHEETS-SHEET 2.

spring seat or SAMUEL NEVIN HENOH, OF YORK, PENNSYLVANIA.

CULTIVATOR AND LIKE MACHINE.

lid 917,603.

Specification of Letters Patent.

Patented April 6, 1909.

- Application filed December 12, 1908. Serial No. 467,295.

To all whom it may concern:

7 Be it known that I, SAMUEL NEVIN HENoH, of York, in the county of York and State of Pennsylvania, have invented a new and use ful Improvement in' Cultivators and Like Machines, of which the following is a specification.

This invention relates to what is known as spring-trip mechanism for shovels or hoes of cultivators and like agricultural machinery wherein the hoes or points are hinged or pivoted to their standards and are adapted to turn back on their hinges when they meet an obstacle which offers more than the predetermined resistance for which the springtrip mechanism is set. A spring-trip mechanism of this general kind is old in the art. And it has consisted, in most instances of which I have knowledge, of a toggle, having the outer ends of its two members pivoted the one to the standard and the other to the hoe or hoe-carrying shoe jointed to said standard; a spring which tends to force the toggle joint in a direction opposite to that in which it is moved by the backward swing of the hinged hoe, and a set screw which de- I termines the normal osition of the toggle joint, and, consequent y, the force required to start the movement of the joint against the stress of the spring.

My invention consists in certain improvements in a spring-trip mechanism of this general kinddesigned to simplify and cheapen the construction, and to enhance the efliciency of the mechanismwhich will first be described in connection with the drawingsaccompanying and forming partof this specification and will thenbe more particularly pointed out in .the claims.

In said drawingsFigure 1 is a partly sectional side elevation of 'a spring-trip hoe and shank embodying my improvements toether with a ortion of the beam or drag ar to which t e standard is attachedthe parts being in normal position. Fig. 2 is a side elevation of the same with the parts in trip position. Fig. 3 is a section on line 33, Flg. 1. Fig. 4 is a section on line 4-4, Fig. 1. Fig. 5 is a section on line 55, Fig. 2. Fig. 6 is a perspective view of the standard. Fig. 7 is a view of the shoe and toggle system connectedtogether but detached from the standard. Fi 8 is a perspective view of the %)lock.

The beam may consist, as in my Patents No. 785,038 of March 14, 1905 and No.

way.

The standard A of the hoe is preferably tubular, of cylindrical-exterior form with its lower end slightly flattened laterally to provide faces to be overlapped by the sides of the shoe B to which the shovel or hoe S is.

bolted, as shown. The shoe is preferably made of sheet steel, substantially U-shaped in cross section, the closed face being placed foremost and furnishing a broad bearing base for the attachment of the shovel or hoe. The shoe'is jointed to the standard by a pivot bolt (1 which passes through the sides of the shoe and the flattened portion of the standard included between those sides.

On the upper portion of the shoe are rearwardly projecting ears 12 between which fits and is held by a headed pivot pin 1) the lower end of the lower member C of a toggle, the upper member D of which toggle is at its upper end pivoted at d to a lu'g E mounted on the rear face of the standard A and projecting rearwardly therefrom. The meeting ends of the two members of the toggleare pivoted together at c. The lower member C of the toggle carries the adjustable set screw 0 for determining the normal position of the toggle joint, and the consequent force requisite to overcome the spring pressure which holds the joint in normal position.

As thus far described there is nothing essentially new in the mechanism.

The spring pressure device is applied to and combined with the standard andthe toggle as follows: Through the tubular standard A from front to rear is formed a hole or opening a which flares and widens rearwardly. Through this hole is passed from the front of the standard the tension rod F. The head of therod brings up against the front of the standard, and the rod thence extends approximately horizontally and at right angles to the standard, rearwardly beyond the standard and the upper member D of the toggle, assing between the two parallel links orbars 5 of which said member is composed. That portion of the tension rod in rear of the member D is encircled by the coiled presmation so that it may snugly fit the back of sure spring G which is confined between the member D and a set nut f on the screw threaded rear end of the tension rod. In order that the front end of the pressure spring G may adapt itself without friction to changes in position of the toggle member D against which it bears, that end of said spring seats itself against the spring seat or block 9 which is pivoted between the bars (1, so that it may adapt itself to said changes in position. The spring seat 9 for this purpose is preferably provided with laterally projecting trunnions g which are cradled in half round recesses or bearings (1 formed in the rear edges of the bars (1. I thus obtain a pivoted pressure-spring seat, which can be readily applied to and removed from the toggle member with which it is used. It can'be applied to and removed from the tension rod, along with the spring, thus permitting the parts of the spring-pressure device to be readily fitted to and removed from the toggle and standard.- On the lower member C of the toggle is a stop piece or flange c which when the toggle oint is broken and flexed by the rearward movement of the hoe, as shown in Fig. 2, brings up at a predetermined point against the upper member D, and thus prevents the further bending of the oint.

I pass now to the lug E, the construction of which, and the manner of attaching it to the standard A, are material features of my invention. wise permanently fixed to the standard. It is detachably connected thereto in such manner as to ermit its ready ap lication to and removal rom the standard same time, when in place, it furnishes an absolutely stable support for the upper member of the toggle; being in fact so formed and arranged that the greater the pressure upon the toggle s stem the tighter and more rigidl it is he (1 in its lace.

he base e of the ug has a saddle-like forthe standard A against which it comes. On the lug and ro'ecting from the face of the base e, is a s an e at the end of which is a downwardly projecting toe or oint e this portion of the lug having a hoo -like formation. At the roper point in that portion of the standard A against which the base of the lug E seats itself is formed an opening a of shape and size to fit the shank 6. When the base e of the lug is applied to thestandard the hook like portion e, 6 is inserted into and throu h the opening at When the base e is seate against the standard A, as seen more clearly in Fig. 1, the shank. e of the hook portion fills the opening a while the toe e extends under and brings u against the solid portion of the standard A elow the ope a. The pressure of the spr' G holds t e lug most securely in this position.

The lug is not welded or-otherwhile at the At the same time, by removing the spring, as can readily be done, the lu E is loose again and can be removed from t e standard with the greatest ease. By this construction I am enabled to fit together all parts of the toggle system and to attach them to the shoe B before connecting the latter to the standard A; and thus. the shoe and the toggle system as an entirety can be removed from and a plied to the standard A. The shoe and toggle system thus connected together, but removed from the standard, are shown in Fig. 7.

Having described my improvements and the best way now known to me of carrying the same into practical effect, I state in conclusion that I do not limit myself strictly to the structural details hereinbefore set forth in illustration of my invention, since manifestly the same can be' varied considerably without departure from the spirit of the invention: but

What I claim herein and desire to secure.

' shoe or hoe support hinged to the standard;

the toggle arranged in rear of the standard having its upper member pivoted on the standard, and its lower member pivoted on the shoe; the tension rod passing rearwardly, and approximately horizontally, through the standard, and thence rearwardly beyond the toggle; a seat or block swiveled in the upper member of the toggle and, provided with a hole through which the tension rod passes;

and a coiled spring held under compression on the tension rod with its front-end seated against the swiveled seat in the upper toggle member, as and for the purposes hereinbefore set forth.

2. The combination with the standard, the

shoe or hoe support hinged thereto, and the tension rod extending rearwardly from the standard through said springsupporting block, and a coiled spring encircling and held under compression on the tension rod with its front end seated against said block, substantially as and for the purposes hereinbefore set forth.

3. The combination with the standard, the shoe hinged thereto, the toggle and the spring pressure device for holding the toggle in normal osition, of 111g lug E to which the up 'er mem erofTlTFtoggle is pivoted, said In eing detachably seated upon the back 0 the standard, andprovided with a hook-like projecting portion, having a shank e which enters and fills an opening a, in the standard,

and atria-6r point e which extendsiunder I standard below the opening a therein, substantially as and for the purposes hereinbe fore set forth.

4. The combination of the standard; the shoe hinged thereto; the toggle on the rear of the standard having its two members jointed to the standard and shoe respectively; the spring pressure device bearing against the upper member of the tog 1e; the set screw mounted on the lower toggl e memher for determining the normal position of the toggle ioint; and the stop 0 also on the lower tog e member for limiting the rearward ben ing of the tog is joint.

5'. The combination 0% the tubular standard having opening a in its rear wall; the shoe hinged to said standard; the lug E provided with a projecting limb to enter said 0 ening a? and enga e the standard; the togg e having its mem ers jointed to the shoe and the standard respectively; and a spring pressure device for holding the toggle in normal position.

In testimony whereof I afiix my signature in presence of two witnesses.

SAMUEL NEVIN HENOH.

Witnesses:

T. E. DROMGOLD, R. N. ZIMMERMAN. 

